Etsy

Etsy Open API v3 provides comprehensive access to handmade marketplace features with OAuth 2.0 authentication and PKCE support.

The API covers listing management, post-purchase order management, and shop management with approximately 70 endpoints. Personal access permits connecting up to 5 shops, while commercial access requires approval for broader marketplace integration.

Rate limits are 10,000 requests per day and 10 per second per OAuth token. Granular permission scopes control endpoint-level access (listings_r, transactions_w, shops_r, etc.). The RESTful API uses JSON responses with UTF-8 encoding. Official Python SDK available with community libraries for other languages. Robust documentation includes migration guides, tutorials, and OpenAPI specifications on GitHub.

It's ideal for shop management tools, inventory automation, order fulfillment systems, and marketplace analytics with strong developer community support.